The exact origin of 'é o mercado do vuvuvú' is not documented, and it circulates as a user-uploaded meme audio clip. The phrase is Brazilian Portuguese and the playful invented word 'vuvuvú' makes it memorable for short-form comedy. With only 1.6 seconds of audio, it spread as a quick reaction sound for market, shopping and deal jokes on meme soundboards. Creators keep using it because the loud, rhythmic delivery turns ordinary buying or selling moments into absurd humor without needing translation.